Whenever a creature you control enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on the creature, then put the card back or put it into your graveyard.)
NM-Mint - $0.60
Lightly Played - $0.50
Moderately Played - $0.50
Heavily Played - $0.50
Damaged - $0.40
NM-Mint Non English - $0.60
Lightly Played Non English - $0.50
Moderately Played Non English - $0.50
Heavily Played Non English - $0.50
Damaged Non English - $0.40